Update GitHub Actions workflows. (#431)

This PR was automatically generated by the
rollout-single-native-provider-workflow workflow in the pulumi/ci-mgmt
repo, from commit 50c552c6cdeb4eae0daff4be525adf0706f2513a.

.github/workflows/weekly-pulumi-update.yml

@@ -64,7 +64,7 @@ jobs:
       with:
         repo: pulumi/pulumictl
     - name: Install Pulumi CLI
-      uses: pulumi/actions@c7fad9e2f0b79653172b36538b8b34b3c0291952 # v6.0.0
+      uses: pulumi/actions@13b8b7177d6fb736766875dac9b78aab07bd785f # v6.0.1
     - name: Setup DotNet
       uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
       with:
@@ -127,10 +127,14 @@ jobs:
     - name: Create PR
       id: create-pr
       if: steps.gomod.outputs.changes != 0
-      run: |
+      run: >
         ver=$(cat .pulumi.version)
+
         msg="Automated upgrade: bump pulumi/pulumi to ${ver}"
-        gh pr create -t "$msg" -b "$msg" -B main
+
+        # See https://github.com/cli/cli/issues/6485#issuecomment-2560935183 for --head workaround
+
+        gh pr create -t "$msg" -b "$msg" --head $(git branch --show-current)
       env:
         GITHUB_TOKEN: ${{ secrets.PULUMI_BOT_TOKEN }}
     name: weekly-pulumi-update